Abstract

Twelve coastal brackish ponds of Sardinia were examined three-four times during a year in relation to their trophic level. Seven parameters were measured including phosphorus, nitrogen, algal pigments and biomass of macrophytes.
Considerable amount of algal nutrients, chlorophyll a and macrophytes, biomass were present in many ponds. Five ponds are proposed as hypereutrophic, four as eutrophic and three as oligotrophic.